Add debug-ability to yacc code

ncw · ncw · commit acd7411e0a21 · 2014-10-30T22:08:51.000Z
diff --git a/parser/lexer.go b/parser/lexer.go
@@ -650,6 +650,11 @@ func (x *yyLex) Error(s string){
 	log.Printf("State %#v", x)
 }
 
+// Set the debug level 0 = off, 4 = max
+func SetDebug(level int){
+	yyDebug = level
+}
+
 // Parse a file
 func Parse(in io.Reader){
 	yyParse(NewLex(in))
diff --git a/parser/testparser/testparser.go b/parser/testparser/testparser.go
@@ -10,11 +10,13 @@ import (
 )
 
 var (
-	lex = flag.Bool("l", false, "Lex the file only")
+	lex = flag.Bool("l", false, "Lex the file only")
+	debugLevel = flag.Int("d", 0, "Debug level 0-4")
 )
 
 func main(){
 	flag.Parse()
+	parser.SetDebug(*debugLevel)
 	for _, path := range flag.Args(){
 		if *lex{
 			fmt.Printf("Lexing %q\n", path)

-Original file line number
+Diff line change
 log.Printf("State %#v", x)
+}
 +// Set the debug level 0 = off, 4 = max
 +funcSetDebug(levelint){
 +yyDebug=level
 +}
++
 // Parse a file
 funcParse(in io.Reader){
 yyParse(NewLex(in))
Original file line number	Diff line number	Diff line change
`@@ -10,11 +10,13 @@ import (`
`10`	`10`	`)`
`11`	`11`
`12`	`12`	`var (`
`13`		`-lex=flag.Bool("l", false, "Lex the file only")`
	`13`	`+lex=flag.Bool("l", false, "Lex the file only")`
	`14`	`+debugLevel=flag.Int("d", 0, "Debug level 0-4")`
`14`	`15`	`)`
`15`	`16`
`16`	`17`	`funcmain(){`
`17`	`18`	`flag.Parse()`
	`19`	`+parser.SetDebug(*debugLevel)`
`18`	`20`	`for_, path:=rangeflag.Args(){`
`19`	`21`	`if*lex{`
`20`	`22`	`fmt.Printf("Lexing %q\n", path)`